Power of observation invisible ink game

Details Power of observation invisible ink game Power of observation invisible ink game

1992-06-01

1993-06-08

Grieb, William H.

Amusement devices: games

Problem eliciting response

434328, A63F 900

Patent

active

052172317

ABSTRACT:
A power of observation game including two sets of visible images with each set including visible images substantially corresponding and with a preselected portion of at least one corresponding image of one set of visible images being visibly incomplete with the completing portion being printed invisibly to be artistically developed visible by an observing participant with a marking member to confirm correctness.

REFERENCES:
patent: 3516177 (1970-06-01), Skinner
patent: 3701205 (1972-10-01), Wolf
patent: 3826499 (1974-07-01), Lenkoff
patent: 4045884 (1977-09-01), Zand
patent: 4084332 (1978-04-01), Waloszyk et al.
patent: 4514177 (1985-04-01), Lenkoff
patent: 5160266 (1992-11-01), Landis
"Hocus-Focus"-The Houston Chronicle publication date unknown.
"Find This Painting"-Stry Denkott Publication, date unknown.
"Find The Twins"-Strylenkoff Publication, date unknown.
"Test your memory"-Stry-Lenkoff, date unknown.

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